'American Girl' Bonnie McKee has a lot of famous friends -- watch Katy Perry, Ke$ha, Macklemore, KISS, and more make lipdub cameos

When you write hit songs for some of the biggest artists on the Hot 100, they kind of owe you one, don’t they? And it looks like Bonnie McKee may have found a way to get a whole lot of pop superstars to repay the favor. Plus: Joan Rivers.

McKee, who has written songs like Katy Perry’s “Part of Me,” Ke$ha’s “C’mon,” and most of Britney’s Femme Fatale album, is the latest pop songwriter to cross over to center stage, following the footsteps of writers-turned-artists (and frequently also still writers) Jessie J, Sia, and Skylar Grey.

In the “American Girl” video released today, Katy Perry, Ke$ha, Kathy Griffin, Macklemore, Joan Rivers, Karmin, George Takei, Adam Lambert, Carly Rae Jepsen, Jenny McCarthy, KISS, Jason Derulo, Jewel, Tommy Lee, Sirah, Taio Cruz, Jane Lynch, and more all pop in to lipsync lines like “I was raised by a television/Every day is a competition.” McKee also sings about falling in love at a 7-11. America! Watch it below: